rMosaicField: Mosaic Random Field

In spatstat.random: Random Generation Functionality for the 'spatstat' Family

Mosaic Random Field

Description

Generate a realisation of a random field which is piecewise constant on the tiles of a given tessellation.

Usage

rMosaicField(X, 
    rgen = function(n) { sample(0:1, n, replace = TRUE)},
    ...,
    rgenargs=NULL)

Arguments

X	A tessellation (object of class "tess").
...	Arguments passed to as.mask determining the pixel resolution.
rgen	Function that generates random values for the tiles of the tessellation.
rgenargs	List containing extra arguments that should be passed to rgen (typically specifying parameters of the distribution of the values).

Details

This function generates a realisation of a random field which is piecewise constant on the tiles of the given tessellation X. The values in each tile are independent and identically distributed.

Value

A pixel image (object of class "im").

Author(s)

\adrian

and \rolf

See Also

rpoislinetess, rMosaicSet

Examples

   if(interactive()) {
     lambda <- 3
     d <- 256
     n <- 30
   } else {
     lambda <- 1
     d <- 32
     n <- 5
   }
   X <- rpoislinetess(lambda)
   plot(rMosaicField(X, runif, dimyx=d))
   plot(rMosaicField(X, rnorm, rgenargs=list(mean=10, sd=2), dimyx=d))
   Y <- dirichlet(runifpoint(n))
   plot(rMosaicField(Y, rnorm, dimyx=d))

spatstat.random documentation built on Sept. 30, 2024, 9:46 a.m.